Zircon System Calls

Handles

• handle_close - close a handle
• handle_close_many - close several handles
• handle_duplicate - create a duplicate handle (optionally with reduced rights)
• handle_replace - create a new handle (optionally with reduced rights) and destroy the old one

Objects

• object_get_child - find the child of an object by its koid
• object_get_cookie - read an object cookie
• object_get_info - obtain information about an object
• object_get_property - read an object property
• object_set_cookie - write an object cookie
• object_set_property - modify an object property
• object_signal - set or clear the user signals on an object
• object_signal_peer - set or clear the user signals in the opposite end
• object_wait_many - wait for signals on multiple objects
• object_wait_one - wait for signals on one object
• object_wait_async - asynchronous notifications on signal change

Threads

• thread_create - create a new thread within a process
• thread_exit - exit the current thread
• thread_read_state - read register state from a thread
• thread_start - cause a new thread to start executing
• thread_write_state - modify register state of a thread

Processes

• process_create - create a new process within a job
• process_read_memory - read from a process's address space
• process_start - cause a new process to start executing
• process_write_memory - write to a process's address space
• process_exit - exit the current process

Jobs

• job_create - create a new job within a job
• job_set_policy - modify policies for a job and its descendants

Tasks (Thread, Process, or Job)

• task_bind_exception_port - attach an exception port to a task
• task_kill - cause a task to stop running
• task_resume_from_exception - resume a task from a previously caught exception
• task_suspend - cause a task to be suspended

Channels

• channel_call - synchronously send a message and receive a reply
• channel_create - create a new channel
• channel_read - receive a message from a channel
• channel_read_etc - receive a message from a channel with handle information
• channel_write - write a message to a channel

Sockets

• socket_accept - receive a socket via a socket
• socket_create - create a new socket
• socket_read - read data from a socket
• socket_share - share a socket via a socket
• socket_shutdown - prevent reading or writing
• socket_write - write data to a socket

Fifos

• fifo_create - create a new fifo
• fifo_read - read data from a fifo
• fifo_write - write data to a fifo

Events and Event Pairs

• event_create - create an event
• eventpair_create - create a connected pair of events

Ports

• port_create - create a port
• port_queue - send a packet to a port
• port_wait - wait for packets to arrive on a port
• port_cancel - cancel notifications from async_wait

Futexes

• futex_wait - wait on a futex
• futex_wake - wake waiters on a futex
• futex_requeue - wake some waiters and requeue other waiters

Virtual Memory Objects (VMOs)

• vmo_create - create a new vmo
• vmo_read - read from a vmo
• vmo_write - write to a vmo
• vmo_clone - clone a vmo
• vmo_get_size - obtain the size of a vmo
• vmo_set_size - adjust the size of a vmo
• vmo_op_range - perform an operation on a range of a vmo
• vmo_replace_as_executable - add execute rights to a vmo
• vmo_create_physical - create a VM object referring to a specific contiguous range of physical memory
• vmo_clone - clone a vmo
• vmo_set_cache_policy - set the caching policy for pages held by a VMO.

Virtual Memory Address Regions (VMARs)

• vmar_allocate - create a new child VMAR
• vmar_map - map a VMO into a process
• vmar_unmap - unmap a memory region from a process
• vmar_protect - adjust memory access permissions
• vmar_destroy - destroy a VMAR and all of its children

Cryptographically Secure RNG

• cprng_draw
• cprng_add_entropy

Time

• nanosleep - sleep for some number of nanoseconds
• clock_get - read a system clock
• clock_get_monotonic - read the monotonic system clock
• ticks_get - read high-precision timer ticks
• ticks_per_second - read the number of high-precision timer ticks in a second
• deadline_after - Convert a time relative to now to an absolute deadline

Timers

• timer_create - create a timer object
• timer_set - start a timer
• timer_cancel - cancel a timer

Hypervisor guests

• guest_create - create a hypervisor guest
• guest_set_trap - set a trap in a hypervisor guest

Virtual CPUs

• vcpu_create - create a virtual cpu
• vcpu_resume - resume execution of a virtual cpu
• vcpu_interrupt - raise an interrupt on a virtual cpu
• vcpu_read_state - read state from a virtual cpu
• vcpu_write_state - write state to a virtual cpu

Global system information

• system_get_features - get hardware-specific features
• system_get_num_cpus - get number of CPUs
• system_get_physmem - get physical memory size
• system_get_version - get version string

Logging

• log_create - create a kernel managed log reader or writer
• log_write - write log entry to log
• log_read - read log entries from log

Multi-function

• vmar_unmap_handle_close_thread_exit - three-in-one
• futex_wake_handle_close_thread_exit - three-in-one

System

• system_mexec - Soft reboot the system with a new kernel and bootimage
• system_mexec_payload_get - Return a ZBI containing ZBI entries necessary to boot this system

DDK

• bti_create - create a new bus transaction initiator
• bti_pin - pin pages and grant devices access to them
• bti_release_quarantine - releases all quarantined PMTs
• cache_flush - Flush CPU data and/or instruction caches
• interrupt_ack - Acknowledge an interrupt object
• interrupt_bind - Bind an interrupt object to a port
• interrupt_create - Create a physical or virtual interrupt object
• interrupt_destroy - Destroy an interrupt object
• interrupt_trigger - Trigger a virtual interrupt object
• interrupt_wait - Wait on an interrupt object
• iommu_create - create a new IOMMU object in the kernel
• pmt_unpin - unpin pages and revoke device access to them
• resource_create - create a resource object
• smc_call - Make an SMC call from user space